Architecture matérielle pour la protection dynamique des données en mémoire externe dans les systèmes embarqués
Auteur / Autrice : | Romain Vaslin |
Direction : | Jean-Philippe Diguet |
Type : | Thèse de doctorat |
Discipline(s) : | Électronique et informatique industrielle |
Date : | Soutenance en 2008 |
Etablissement(s) : | Lorient |
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Résumé
We offer a secure hardware architecture for system boot up, secure software execution and on field update. A new scheme is presented to guarantee dat confidentiality and integrity for off-chip memories. The architecture capabilities are extended to support on the fly security level management of data. The goal is to minimize the overhead due to security like logic area, performance, memory footprint and power consumption for the architecture. After careful evaluation through real time applications execution with this secure architecture, the next step was to provide an end to end solution. Toward th solution, a secure boot up mechanism is proposed in order to securely start applications from a flash memory. More techniques are also introduced to allow on field software update for later secure execution with the architecture. A complete set ofresults has been generated in order to underline the fact that the proposed solution matches with the current needs and constraints of embedded systems. For the first time the security cost in area, performance, memory and power has been evaluated for embedded systems with an end to end solution.